The number if people in your household does not alter your tax liability, only the number of dependents in that group. Those who qualify as dependents are: “you

The number if people in your household does not alter your tax liability, only the number of dependents in that group. Those who qualify as dependents are: “your biological child, stepchild, foster child, sibling, step-sibling, or a descendant of any of these individually... but the child can’t turn 19 at any time during the tax year (age 24 if a full-time student).” From: https://turbotax.intuit.com/tax-tips/family/what-are-dependents/L951ZvVUb https://turbotax.intuit.com/tax-tips/family/what-are-depende...